Stencil and method of making the same



Sui 19 192 y 7 A. M. BATES ET AL STENCIL AND METHOD OF MAKING THE SAME Filed March 17. 1924 a 4 4 0 "av & J Y O E T N K B WR .n 0 VMQAT m e .A

8 aW A y M 0.

Patented July 19, 1927.

NITED STATES PATENT OFFICE.

ADELMER M. BATES AND JOHANN E. DANCKER, OF CI-LICAGO, ILLINOIS, ASSIGNORS TO BATES VALVE BAG COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

STENCIL AND METHOD OF MAKING THE SAME.

Our invention relates to a stencil plate and the method of making the same, and more particularly to a stencil plate adapted for stencil-printing. v

For many uses, printing by applying the ink through the perforations of a sten'c1l plate is cheaper and more satisfactory than printing with type. It is objectionable, however to have connecting lines across the letters where detached pieces are necessary to complete the characters. For example, the letter 0 cannot be printed. in complete outline through a stencil without having some means for holding in place the detached to center of the U.

One object of our invention is to overcome this dificulty and provide a stencil through which characters having any desired outline may beprinted. Other objects of our invention will appear as the description proceeds.

In the accompanying drawing, Figure 1 shows a blank of stencil material partially prepared. Fig. 2 shows the three layers of our stencil ready for assembling. Figure 3 shows the assembled stencil. Fig. 4 shows the stencil completed by the insertion of detached pieces. Fig. 5 is a section on the line 55 of Fig. 4.

In preparing our stencil, we take a blank of stencil material 10 and cut therein outlines 11 of the desired characters. We prefer to out these outlines by means of dies. Where the letters are of. considerable size, so it is convenient to complete these outlines by die-cutting, but there is difliculty in detaching the out out material from the dies Where the characters are small in proportion to the thickness of the stencil material. so For reasons more fully stated in our copending application, Serial No. 699,689, filed March 17, 1924, we prefer, therefore,'. to leave the character outlines incomplete, as at 12, so that when the dies are removed the no material within the outlines will remain attached to the stencil blank. These completing portions 12 of the outlines may then be out with less trouble than the removal of the material from the dies would cause.

We prepare two duplicate blanks, 10 and tit) 12, in this manner and unite them to opposite sides of a layer 11 of suitable material. Ne prefer to use a loosely woven cloth, al though the character of the weave is not as essential as that the material shall be inkabsorbent. The resultant blank, shown in Fig. 3, hast-herein the outlines of the desired characters. Any detached pieces necessary, for completing the desired pattern are then united to the layer 11 within the previously 00 formed outlines. In the examples shown, these detached pieces are the center 13 of the letter O and the center 14 of the letter A.

It will be understood that a stencil constructed in the described manner might be used with but one layer of stencil material, which would be placed next to the material intended to receive the printing, but we prefer to use two layers of stencil material in order that the surface of the stencil next to the ink-applying member may be nonadherent to ink. y

We are aware that it has been proposed to hold in place detached pieces of stencil material necessary to complete the desired 16 patterns by means of wires or reticulated material. So far as we are aware, these stencils "were not intended for stencil-printing, but were intended for use with brushes by means of which colorin matter could be worked around the stran s. With stencilprinting any filaments which were non-absorbent to ink would result in un-inked lines across the characters, and would therefore be objectionable, whereas the perforations might be entirely covered with ink absorbent material without preventing the transmission of ink through the perforations.

Various changes in our method and stencil plate may be made within the scope of the appended claims.

What We claim is:

1. The method of making a stencil plate, which consists in die-cutting the outlines of the desired characters except-for connect lines suificient to keep the stencil matei ilfi in place when the dies are removed, removing the dies, and then completing the cutting of said outlines and removing the stencil material within the outlines.

2. The method of making a stencil plate, which consists in die-cutting the outlines of Q memes the desired characters except for connecting the reticulated material Within said outlines lines sufiicient to keep the stencil material in pieces of stencil material necessary te cem- W place when the dies are removed, removing plete the desired characters, the die and. thereafter cutting the connect- In testimony Whereef We have hereunto 5 ing lines of stencil material and removing signed our names to this specification the material within said outlines and then I uniting the stencil blank and a layer of ADELMER M=B.A.TES. reticulated material, and finally uniting to J OHANN E. DANCKERB 

